EP2782471B1 - Integral diffuser for a hair-dryer - Google Patents

Integral diffuser for a hair-dryer Download PDF

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Publication number
EP2782471B1
EP2782471B1 EP12795559.9A EP12795559A EP2782471B1 EP 2782471 B1 EP2782471 B1 EP 2782471B1 EP 12795559 A EP12795559 A EP 12795559A EP 2782471 B1 EP2782471 B1 EP 2782471B1
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EP
European Patent Office
Prior art keywords
diffuser
base
previous
diffuser according
fingers
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EP12795559.9A
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German (de)
French (fr)
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EP2782471A1 (en
Inventor
Eddy NGO
Marc Legrain
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SEB SA
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SEB SA
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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • A45D20/122—Diffusers, e.g. for variable air flow

Definitions

  • the present invention relates to a diffuser for hair dryers, and a hairdryer comprising this diffuser.
  • Such an apparatus is intended to uniformly distribute the air blown by a hair dryer and is provided with fingers for distributing and moving wet hair to dry.
  • diffusers have a base with a rear shell whose orifice is attached to the tip of the hair dryer and a front shell with protruding fingers and multiple orifices.
  • the air coming from the hair dryer passes into a defined space inside the two hulls and exits through the holes in the front hull.
  • Such a diffuser is inevitably composed of two molded parts and is very bulky.
  • the object of the invention is to provide an improved solution of diffusion of air from a hair dryer, which does not reproduce the drawback or drawbacks of the state of the art.
  • the invention provides a monobloc diffuser according to claim 1.
  • the central portion may have a substantially convex geometric shape, the convexity being oriented forward.
  • the central part of the diffuser is curved towards the outside.
  • the flow of air blown against this convex central base thus follows the convex line and is directed towards the rather central part of the base before going through the entire base from its central part to its radial end. Flow flow is relatively laminar.
  • the central part comprises openings for passing part of the air flow. This allows a flow to flow through the center of the diffuser.
  • the base may comprise a substantially cylindrical opening at its central zone at the level of which a fastening means is arranged to cooperate with a hair dryer. It can be a fixing by screw, bayonet or other means within the reach of the skilled person.
  • the central portion may be inscribed in a crown cone portion positioned towards the front of the diffuser and having as axis the central axis of the substantially cylindrical opening at the central zone of its base.
  • the airflow is all the more homogeneous.
  • the central portion may comprise openings arranged between at least one ring whose surface is inclined in order to form a guide ramp capable of laterally guiding a flow of air.
  • the central part may comprise a dome-shaped cap.
  • the cap can form a substantially semi-spherical dome at its top. The circulation of the flow is all the more laminar.
  • the central part may comprise pillars which extend from the base to its top, so as to maintain at least one ring and the cap.
  • the diffuser may comprise fingers which extend forwardly from the front face of the base so as to come into contact with the hair to be dried.
  • the diffuser may comprise at least one finger having at least two openings for the passage of an air flow.
  • the heating of the fingers is all the more uniform.
  • the diffuser may comprise several fingers distributed over a first circle.
  • the diffuser may comprise a plurality of fingers arranged on a second circle concentric with the first circle.
  • the fingers of two circles can be staggered, thus ensuring a better passage of the flow through the diffuser.
  • the internal volume of the fingers can be empty and form hollow portions of the rear surface of the base.
  • the base may have a concave shape, concavity oriented forward.
  • the base may have a substantially conical or parabolic shape.
  • the invention also relates to a hair dryer comprising at least one diffuser according to the invention described herein.
  • the invention may therefore relate to a set consisting of a hair dryer, the diffuser according to the invention and at least one other type of air concentration nozzle accessory.
  • the invention relates to a method of manufacturing a diffuser for a hair dryer described here, characterized in that it comprises a single molding step.
  • This method has the advantages of saving material, and eliminating all the fixing steps known in the prior art, producing an increase in productivity.
  • the diffuser associated with a hair dryer to define its forward and backward directions, these directions along a longitudinal axis x corresponding to the flow axis of the air flow transmitted to the diffuser, the forward direction being oriented towards the air outlet of the diffuser.
  • the rear part of the diffuser is particularly visible on the figure 1 . It comprises at its rear end a cylindrical opening 2 whose contour 3 is equipped with a fixing means 4 for receiving a corresponding conduit of a hair dryer.
  • the outer surface of the diffuser expands forward from this rear opening, and forms a base 1 for the arrangement of elements involved in the diffusion of air, which are arranged at the inside this base, on its front surface, as will be detailed later.
  • the rear surface of the base comprises hollow portions 5 at the level of fingers 6, visible on the Figures 1 and 2 , which allows a lightening of the diffuser and a reduction of its cost by a reduction of the quantity of material used. These fingers 6 extend beyond the front end 7 of the base 1.
  • the Figures 3 and 4 show the arrangement arranged inside the base 1, for diffusing a flow of air that arrives through the rear opening 2.
  • This arrangement comprises first a central portion, arranged in the extension of the opening 2, directly intended to receive and broadcast the stream of incoming air from the hair dryer.
  • This central portion extends forwardly along the longitudinal axis x, which represents an axis of symmetry in the embodiment shown. It comprises four support members or pillars 11, of substantially triangular shape, the rear portion 12 of which is widest disposed on the base 1 perpendicularly to the cylindrical opening 2. The four pillars 11 are distributed every quarter turn on the contour of this opening 2. Then, the front end 13 of these pillars 11, in the form of a point, form a support for receiving a ring 14 and a cap 15.
  • L Ring 14 has the axis of symmetry the longitudinal axis x.
  • This ring represents a small portion of cone.
  • the central portion comprises an open structure between this ring 14 and the various pillars 11, promoting the lateral exhaust of the air flow.
  • the cap 15 is in the form of a hemisphere centered on the longitudinal axis x, which prevents the flow of air along this axis, and participates in its lateral diffusion. It forms a dome in the center of this central part, whose interior space is oriented behind the back, or towards the opening 2.
  • the central portion of the diffuser could be slightly offset from the longitudinal axis x of the diffuser, and / or be oriented in a slightly inclined direction relative to this longitudinal direction x. According to another variant, it could extend forward in a direction along an axis, corresponding or not to the longitudinal axis x, which does not necessarily represent an axis of symmetry. In all cases, the section of the central part by a plane perpendicular to this axis, corresponding or not to the longitudinal axis x, remains constant or decreases from the rear to the front.
  • the central portion may take other forms, which remain for example inscribed in a crown cone portion positioned towards the front of the diffuser
  • the diffuser comprises fingers 6 which extend forward, intended to come into contact with the hair to be dried.
  • These fingers have a cylindrical or conical shape and extend parallel to the longitudinal direction or slightly inclined with respect to this direction. They have a hollow volume and include several openings 8, which allow a flow of air to pass through them, which promotes the lateral diffusion of air, the fingers forming a barrier of lesser importance than if they had not 8.
  • a part of the air flow can escape through the openings of the rear surface of the base 1 at the hollow portions 5 formed by the fingers, thereby diffusing the air more widely on the hair.
  • the fingers 6 are distributed on the base 1, between the opening 2 which occupies a central rear position and its front end 7. According to the embodiment, they are distributed over two concentric circles, centered on the axis of the opening 2, and are thus symmetrically distributed around the longitudinal axis x. The fingers 6 of each of the two circles are further arranged in staggered rows, to promote their spatial distribution.
  • the fingers may have any other shape, and / or comprise any other number of openings.
  • the diffuser could include another number of fingers, and a different distribution of these fingers on the base 1.
  • the base 1 can take any shape, symmetrical or not around the longitudinal axis x, as a shape substantially cone portion or parabola.
  • the diffuser is made of heat resistant plastic material up to a temperature of about [170 ° C] such as [135 ° C].
  • the invention also relates to a complete hair dryer incorporating a diffuser as described above.
  • the hair dryer comprises a device for generating an air flow, a heating element, and a hot air duct for a connection to the diffuser.
  • This connection can be obtained by any connecting means, preferably removable.
  • the invention also relates to a method of manufacturing a diffuser for a hair dryer, which preferably comprises a single molding step, to thereby form a diffuser which is in a monolithic form, monolithic, plastic material.
  • the diffuser has a base and a central portion each having an axis of symmetry coincident which is substantially parallel to the axis.
  • the central portion (14, 15) extends forwardly from the base, for example extends from the opening of the base.
  • the user attaches the diffuser to the air outlet nozzle of the hair dryer and comes to apply the diffuser to the scalp by rotational movement, the distal ends of the fingers being almost in contact with the scalp for dry the most quickly and most evenly wet hair.

Landscapes

  • Cleaning And Drying Hair (AREA)

Description

La présente invention concerne un diffuseur pour sèche-cheveux, ainsi qu'un sèche-cheveux comprenant ce diffuseur. Un tel appareil vise à diffuser uniformément l'air soufflé par un sèche-cheveux et est muni de doigts destinés à répartir et mettre en mouvement les cheveux humides à sécher.The present invention relates to a diffuser for hair dryers, and a hairdryer comprising this diffuser. Such an apparatus is intended to uniformly distribute the air blown by a hair dryer and is provided with fingers for distributing and moving wet hair to dry.

La plupart des diffuseurs connus présente une base munie d'une coque arrière dont l'orifice se fixe à l'embout du sèche-cheveux et une coque avant munie de doigts protubérants et de multiples orifices. L'air arrivant du sèche-cheveux passe dans un espace défini à l'intérieur des deux coques et sort par les orifices de la coque avant. Un tel diffuseur est composé inévitablement de deux pièces moulées et est très encombrant.Most known diffusers have a base with a rear shell whose orifice is attached to the tip of the hair dryer and a front shell with protruding fingers and multiple orifices. The air coming from the hair dryer passes into a defined space inside the two hulls and exits through the holes in the front hull. Such a diffuser is inevitably composed of two molded parts and is very bulky.

Par ailleurs le document US7562466 divulgue à titre d'exemple un diffuseur pour sèche-cheveux de l'état de la technique. Ce diffuseur définit une base présentant une ouverture arrière destinée à recevoir l'entrée d'un flux d'air et une face avant destinée à la diffusion d'un flux d'air sortant, et une partie centrale creusée vers l'intérieur et munie d'orifices pour le passage de l'air. Cette base ne présente plus 2 coques assemblées ensemble mais est faite d'une pièce unique. Cette solution s'avère encore en pratique insuffisante. En effet ce diffuseur est composé de deux pièces, la base et la partie centrale, assemblées ensemble, et la répartition du flux d'air d'un sèche-cheveux équipé de ce diffuseur n'est pas homogène car reste relativement centrée au niveau de l'entrée du diffuseur sans se répartir sur toute la base. Le document EP0850002 divulgue un diffuseur pour sèche-cheveux comprenant une base présentant une ouverture arrière destinée à recevoir l'entrée d'un flux d'air et une face avant destinée à la diffusion d'un flux d'air sortant, le diffuseur comprenant des doigts qui s'étendent vers l'avant depuis la face avant de la base de sorte à pouvoir venir en contact avec des cheveux à sécher. D'une manière générale, tous les diffuseurs existants présentent tout ou partie des inconvénients suivants :

  • Ils diffusent l'air de manière insuffisamment efficace et homogène vers les cheveux;
  • Ils sont trop coûteux, du fait de la quantité de matière utilisée et/ou d'étapes d'assemblage mises en oeuvre ;
  • Ils sont encombrants.
In addition, the document US7562466 discloses as an example a diffuser for hairdryers of the state of the art. This diffuser defines a base having a rear opening for receiving the inlet of an air flow and a front face for the diffusion of an outgoing air flow, and a central portion dug inwards and provided with of orifices for the passage of air. This base no longer has 2 shells assembled together but is made of a single piece. This solution is still insufficient in practice. Indeed this diffuser is composed of two parts, the base and the central part, assembled together, and the distribution of the air flow of a hair dryer equipped with this diffuser is not homogeneous because remains relatively centered at the level of the entrance of the diffuser without spreading all over the base. The document EP0850002 discloses a hair dryer diffuser comprising a base having a rear opening for receiving the inlet of an air flow and a front face for diffusing an outgoing air flow, the diffuser comprising fingers which extend forwardly from the front face of the base so as to come into contact with the hair to be dried. In general, all existing broadcasters have some or all of the following disadvantages:
  • They diffuse the air insufficiently effective and homogeneous towards the hair;
  • They are too expensive, because of the amount of material used and / or assembly steps implemented;
  • They are bulky.

Ainsi, le but de l'invention est de fournir une solution améliorée de diffusion de l'air provenant d'un sèche-cheveux, qui ne reproduit pas le ou les inconvénients de l'état de la technique.Thus, the object of the invention is to provide an improved solution of diffusion of air from a hair dryer, which does not reproduce the drawback or drawbacks of the state of the art.

A cet effet, l'invention propose un diffuseur monobloc selon la revendication 1. Selon l'invention la partie centrale peut présenter une forme géométrique substantiellement convexe, la convexité étant orientée vers l'avant. Ainsi la partie centrale du diffuseur est bombée vers l'extérieur. Le flux d'air soufflé contre cette base centrale convexe suit ainsi la ligne convexe et est dirigé vers la partie plutôt centrale de la base avant de parcourir toute la base depuis sa partie centrale vers son extrémité radiale. L'écoulement du flux est relativement laminaire.For this purpose, the invention provides a monobloc diffuser according to claim 1. According to the invention the central portion may have a substantially convex geometric shape, the convexity being oriented forward. Thus the central part of the diffuser is curved towards the outside. The flow of air blown against this convex central base thus follows the convex line and is directed towards the rather central part of the base before going through the entire base from its central part to its radial end. Flow flow is relatively laminar.

Selon l'invention la partie centrale comprend des ouvertures pour laisser passer une partie du flux d'air. Ceci permet de laisser passer un flux au centre du diffuseur.According to the invention the central part comprises openings for passing part of the air flow. This allows a flow to flow through the center of the diffuser.

Selon l'invention la base peut comprendre une ouverture sensiblement cylindrique au niveau de sa zone centrale au niveau de laquelle est agencé un moyen de fixation pour coopérer avec un sèche-cheveux. Il peut s'agir d'une fixation par vis, par baïonnette ou autre moyen à la portée de l'homme du métier.According to the invention, the base may comprise a substantially cylindrical opening at its central zone at the level of which a fastening means is arranged to cooperate with a hair dryer. It can be a fixing by screw, bayonet or other means within the reach of the skilled person.

Selon l'invention la partie centrale peut être inscrite dans une portion de cône de sommet positionné vers l'avant du diffuseur et ayant pour axe l'axe central de l'ouverture sensiblement cylindrique au niveau de la zone centrale de sa base. Le flux d'air est d'autant plus homogène.According to the invention the central portion may be inscribed in a crown cone portion positioned towards the front of the diffuser and having as axis the central axis of the substantially cylindrical opening at the central zone of its base. The airflow is all the more homogeneous.

Selon l'invention la partie centrale peut comprendre des ouvertures aménagées entre au moins un anneau dont une surface est inclinée afin de former une rampe de guidage apte à guider latéralement un flux d'air.According to the invention the central portion may comprise openings arranged between at least one ring whose surface is inclined in order to form a guide ramp capable of laterally guiding a flow of air.

Selon l'invention la partie centrale peut comprendre un chapeau en forme de dôme. Selon l'invention le chapeau peut former un dôme sensiblement semi-sphérique à son sommet. La circulation du flux est d'autant plus laminaire.According to the invention the central part may comprise a dome-shaped cap. According to the invention the cap can form a substantially semi-spherical dome at its top. The circulation of the flow is all the more laminar.

Selon l'invention la partie centrale peut comprendre des piliers qui s'étendent depuis la base jusqu'à son sommet, de sorte à maintenir au moins un anneau et le chapeau.According to the invention the central part may comprise pillars which extend from the base to its top, so as to maintain at least one ring and the cap.

Selon l'invention le diffuseur peut comprendre des doigts qui s'étendent vers l'avant depuis la face avant de la base de sorte à pouvoir venir en contact avec des cheveux à sécher.According to the invention the diffuser may comprise fingers which extend forwardly from the front face of the base so as to come into contact with the hair to be dried.

Selon l'invention le diffuseur peut comprendre au moins un doigt présentant au moins deux ouvertures permettant le passage d'un flux d'air. La chauffe des doigts est d'autant plus uniforme.According to the invention the diffuser may comprise at least one finger having at least two openings for the passage of an air flow. The heating of the fingers is all the more uniform.

Selon l'invention le diffuseur peut comprendre plusieurs doigts répartis sur un premier cercle.According to the invention, the diffuser may comprise several fingers distributed over a first circle.

Selon l'invention le diffuseur peut comprendre plusieurs doigts disposés sur un second cercle concentrique au premier cercle. Selon l'invention les doigts des deux cercles peuvent être disposés en quinconce, assurant ainsi un meilleur passage du flux au travers du diffuseur.According to the invention the diffuser may comprise a plurality of fingers arranged on a second circle concentric with the first circle. According to the invention the fingers of two circles can be staggered, thus ensuring a better passage of the flow through the diffuser.

Selon l'invention, le volume intérieur des doigts peut être vide et former des parties creuses de la surface arrière de la base.According to the invention, the internal volume of the fingers can be empty and form hollow portions of the rear surface of the base.

Selon l'invention, la base peut présenter une forme concave, de concavité orientée vers l'avant.According to the invention, the base may have a concave shape, concavity oriented forward.

Selon l'invention, la base peut présenter une forme sensiblement conique ou parabolique.According to the invention, the base may have a substantially conical or parabolic shape.

L'invention concerne par ailleurs un sèche-cheveux comprenant au moins un diffuseur selon l'invention décrite ici. L'invention peut donc concerner un ensemble formé d'un sèche-cheveux, du diffuseur selon l'invention et d'au moins un autre accessoire de type buse de concentration d'air.The invention also relates to a hair dryer comprising at least one diffuser according to the invention described herein. The invention may therefore relate to a set consisting of a hair dryer, the diffuser according to the invention and at least one other type of air concentration nozzle accessory.

Enfin, l'invention concerne un procédé de fabrication d'un diffuseur pour sèche-cheveux décrit ici, caractérisé en ce qu'il comprend une unique étape de moulage. Ce procédé a pour avantages d'économiser de la matière, et de supprimer toutes les étapes de fixation connues dans l'art antérieur, produisant une augmentation de productivité.Finally, the invention relates to a method of manufacturing a diffuser for a hair dryer described here, characterized in that it comprises a single molding step. This method has the advantages of saving material, and eliminating all the fixing steps known in the prior art, producing an increase in productivity.

Ces objets, caractéristiques et avantages de la présente invention seront exposés en détails dans la description suivante d'un mode de réalisation particulier fait à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • La figure 1 représente une vue en perspective arrière d'un diffuseur pour sèche-cheveux selon un mode de réalisation de l'invention.
  • La figure 2 représente une vue de côté du diffuseur pour sèche-cheveux selon le mode de réalisation de l'invention.
  • Les figures 3 et 4 représentent des vues en perspective avant du diffuseur pour sèche-cheveux selon un mode de réalisation de l'invention.
  • La figure 5 représente une vue en coupe de côté selon un plan longitudinal médian du diffuseur pour sèche-cheveux selon le mode de réalisation de l'invention.
These objects, features and advantages of the present invention will be set forth in detail in the following description of a particular embodiment made in a non-limiting manner with reference to the appended figures among which:
  • The figure 1 represents a rear perspective view of a hair dryer diffuser according to one embodiment of the invention.
  • The figure 2 is a side view of the hair dryer diffuser according to the embodiment of the invention.
  • The Figures 3 and 4 represent front perspective views of the hair dryer diffuser according to one embodiment of the invention.
  • The figure 5 is a side sectional view along a median longitudinal plane of the hair dryer diffuser according to the embodiment of the invention.

Pour la suite de la description, nous imaginons le diffuseur associé à un sèche-cheveux pour définir ses directions avant et arrière, ces directions s'entendant selon un axe longitudinal x correspondant à l'axe d'écoulement du flux d'air transmis au diffuseur, la direction avant étant orientée du côté de la sortie de l'air du diffuseur.For the rest of the description, we imagine the diffuser associated with a hair dryer to define its forward and backward directions, these directions along a longitudinal axis x corresponding to the flow axis of the air flow transmitted to the diffuser, the forward direction being oriented towards the air outlet of the diffuser.

La partie arrière du diffuseur selon un mode de réalisation, destinée à une orientation du côté d'un sèche-cheveux, est particulièrement visible sur la figure 1. Elle comprend à son extrémité arrière une ouverture 2 cylindrique dont le contour 3 est équipé d'un moyen de fixation 4 pour recevoir un conduit correspondant d'un sèche-cheveux. D'autre part, la surface extérieure du diffuseur s'élargit vers l'avant, depuis cette ouverture arrière, et forme une base 1 pour l'agencement d'éléments participant à la diffusion de l'air, qui sont disposés à l'intérieur de cette base, sur sa surface avant, comme cela sera détaillé par la suite. En remarque, la surface arrière de la base comprend des parties creuses 5 au niveau de doigts 6, visibles sur les figures 1 et 2, ce qui permet un allègement du diffuseur et une réduction de son coût par une réduction de la quantité de matière utilisée. Ces doigts 6 s'étendent au-delà de l'extrémité antérieure 7 de la base 1.The rear part of the diffuser according to one embodiment, intended for an orientation on the side of a hair dryer, is particularly visible on the figure 1 . It comprises at its rear end a cylindrical opening 2 whose contour 3 is equipped with a fixing means 4 for receiving a corresponding conduit of a hair dryer. On the other hand, the outer surface of the diffuser expands forward from this rear opening, and forms a base 1 for the arrangement of elements involved in the diffusion of air, which are arranged at the inside this base, on its front surface, as will be detailed later. As a remark, the rear surface of the base comprises hollow portions 5 at the level of fingers 6, visible on the Figures 1 and 2 , which allows a lightening of the diffuser and a reduction of its cost by a reduction of the quantity of material used. These fingers 6 extend beyond the front end 7 of the base 1.

Les figures 3 et 4 montrent l'agencement aménagé à l'intérieur de la base 1, destiné à diffuser un flux d'air qui arrive par l'ouverture 2 arrière.The Figures 3 and 4 show the arrangement arranged inside the base 1, for diffusing a flow of air that arrives through the rear opening 2.

Cet agencement comprend d'abord une partie centrale, aménagée dans le prolongement de l'ouverture 2, directement destinée à recevoir et diffuser le flux d'air entrant, provenant du sèche-cheveux. Cette partie centrale s'étend vers l'avant le long de l'axe longitudinal x, qui représente un axe de symétrie dans le mode de réalisation représenté. Elle comprend quatre éléments supports ou piliers 11, de forme sensiblement triangulaire, dont la partie arrière 12 la plus large est disposée sur la base 1 de manière perpendiculaire à l'ouverture 2 cylindrique. Les quatre piliers 11 sont répartis tous les quarts de tour sur le contour de cette ouverture 2. Ensuite, l'extrémité avant 13 de ces piliers 11, en forme de pointe, forme un support pour recevoir un anneau 14 et un chapeau 15. L'anneau 14 a pour axe de symétrie l'axe longitudinal x. Il comprend une surface inclinée vers l'extérieur, qui tend à diffuser l'air provenant de l'ouverture 2 vers les parties latérales du diffuseur, comme une rampe de guidage apte à élargir un flux d'air. Cet anneau représente une petite portion de cône. La partie centrale comprend une structure ouverte entre cet anneau 14 et les différents piliers 11, favorisant l'échappement latéral du flux d'air. Le chapeau 15 se présente sous la forme d'une demi-sphère centrée sur l'axe longitudinal x, qui empêche l'écoulement de l'air le long de cet axe, et participe à sa diffusion latérale. Il forme un dôme au centre de cette partie centrale, dont l'espace intérieur est orientévers l'arrière, soit vers l'ouverture 2.This arrangement comprises first a central portion, arranged in the extension of the opening 2, directly intended to receive and broadcast the stream of incoming air from the hair dryer. This central portion extends forwardly along the longitudinal axis x, which represents an axis of symmetry in the embodiment shown. It comprises four support members or pillars 11, of substantially triangular shape, the rear portion 12 of which is widest disposed on the base 1 perpendicularly to the cylindrical opening 2. The four pillars 11 are distributed every quarter turn on the contour of this opening 2. Then, the front end 13 of these pillars 11, in the form of a point, form a support for receiving a ring 14 and a cap 15. L Ring 14 has the axis of symmetry the longitudinal axis x. It comprises an inclined surface towards the outside, which tends to diffuse the air coming from the opening 2 towards the lateral parts of the diffuser, like a guide ramp able to widen a flow of air. This ring represents a small portion of cone. The central portion comprises an open structure between this ring 14 and the various pillars 11, promoting the lateral exhaust of the air flow. The cap 15 is in the form of a hemisphere centered on the longitudinal axis x, which prevents the flow of air along this axis, and participates in its lateral diffusion. It forms a dome in the center of this central part, whose interior space is oriented behind the back, or towards the opening 2.

En variante, la partie centrale du diffuseur pourrait être légèrement décalée de l'axe longitudinal x du diffuseur, et/ou être orientée dans une direction légèrement inclinée par rapport à cette direction longitudinale x. Selon une autre variante, elle pourrait s'étendre vers l'avant dans une direction selon un axe, correspondant ou non à l'axe longitudinal x, qui ne représente pas obligatoirement un axe de symétrie. Dans tous les cas, la section de la partie centrale par un plan perpendiculaire à cet axe, correspondant ou non à l'axe longitudinal x, reste constante ou diminue de l'arrière vers l'avant. Pour cela, la partie centrale peut prendre d'autres formes, qui restent par exemple inscrites dans une portion de cône de sommet positionné vers l'avant du diffuseurAlternatively, the central portion of the diffuser could be slightly offset from the longitudinal axis x of the diffuser, and / or be oriented in a slightly inclined direction relative to this longitudinal direction x. According to another variant, it could extend forward in a direction along an axis, corresponding or not to the longitudinal axis x, which does not necessarily represent an axis of symmetry. In all cases, the section of the central part by a plane perpendicular to this axis, corresponding or not to the longitudinal axis x, remains constant or decreases from the rear to the front. For this, the central portion may take other forms, which remain for example inscribed in a crown cone portion positioned towards the front of the diffuser

Ensuite, le diffuseur comprend des doigts 6 qui s'étendent vers l'avant, destinés à venir en contact avec les cheveux à sécher. Ces doigts présentent une forme cylindrique ou conique et s'étendent parallèlement à la direction longitudinale ou de manière légèrement inclinée par rapport à cette direction. Ils présentent un volume creux et comprennent plusieurs ouvertures 8, qui permettent à un flux d'air de les traverser, ce qui favorise la diffusion latérale de l'air, les doigts formant un obstacle de moindre importance que s'ils n'avaient pas ces ouvertures 8. De plus, une partie du flux d'air peut s'échapper par les ouvertures de la surface arrière de la base 1 au niveau des parties creuses 5 formées par les doigts, ce qui diffuse ainsi l'air plus largement sur les cheveux.Then, the diffuser comprises fingers 6 which extend forward, intended to come into contact with the hair to be dried. These fingers have a cylindrical or conical shape and extend parallel to the longitudinal direction or slightly inclined with respect to this direction. They have a hollow volume and include several openings 8, which allow a flow of air to pass through them, which promotes the lateral diffusion of air, the fingers forming a barrier of lesser importance than if they had not 8. In addition, a part of the air flow can escape through the openings of the rear surface of the base 1 at the hollow portions 5 formed by the fingers, thereby diffusing the air more widely on the hair.

Les doigts 6 sont répartis sur la base 1, entre l'ouverture 2 qui occupe une position arrière centrale et son extrémité avant 7. Selon le mode de réalisation, ils sont répartis sur deux cercles concentriques, centrés sur l'axe de l'ouverture 2, et sont ainsi symétriquement répartis autour de l'axe longitudinal x. Les doigts 6 de chacun des deux cercles sont de plus disposés en quinconce, pour favoriser leur répartition spatiale.The fingers 6 are distributed on the base 1, between the opening 2 which occupies a central rear position and its front end 7. According to the embodiment, they are distributed over two concentric circles, centered on the axis of the opening 2, and are thus symmetrically distributed around the longitudinal axis x. The fingers 6 of each of the two circles are further arranged in staggered rows, to promote their spatial distribution.

En variante, les doigts peuvent présenter toute autre forme, et/ou comprendre tout autre nombre d'ouvertures. De plus, le diffuseur pourrait comprendre un autre nombre de doigts, et une répartition différente de ces doigts sur la base 1.Alternatively, the fingers may have any other shape, and / or comprise any other number of openings. In addition, the diffuser could include another number of fingers, and a different distribution of these fingers on the base 1.

La base 1 peut prendre toute forme, symétrique ou non autour de l'axe longitudinal x, comme une forme sensiblement en portion de cône ou de parabole.The base 1 can take any shape, symmetrical or not around the longitudinal axis x, as a shape substantially cone portion or parabola.

Le diffuseur est composé d'un matériau plastique résistant à la chaleur jusqu'à une température d'environ [170°C] comme par exemple [135°C].The diffuser is made of heat resistant plastic material up to a temperature of about [170 ° C] such as [135 ° C].

L'invention porte aussi sur un sèche-cheveux complet intégrant un diffuseur tel que décrit précédemment. Pour cela, le sèche-cheveux comprend un dispositif pour générer un flux d'air, un élément chauffant, et une conduite de cet air chaud destinée à une liaison au diffuseur. Cette liaison peut être obtenue par tout moyen de liaison, de préférence amovible.The invention also relates to a complete hair dryer incorporating a diffuser as described above. For this, the hair dryer comprises a device for generating an air flow, a heating element, and a hot air duct for a connection to the diffuser. This connection can be obtained by any connecting means, preferably removable.

L'invention porte aussi sur un procédé de fabrication d'un diffuseur pour sèche-cheveux, qui comprend de préférence une seule étape de moulage, pour former ainsi un diffuseur qui se présente sous une forme mono-pièce, monolithique, en matériau plastique.The invention also relates to a method of manufacturing a diffuser for a hair dryer, which preferably comprises a single molding step, to thereby form a diffuser which is in a monolithic form, monolithic, plastic material.

Le diffuseur présente une base et une partie centrale présentant chacun un axe de symétrie confondu qui est parallèle sensiblement à l'axe.The diffuser has a base and a central portion each having an axis of symmetry coincident which is substantially parallel to the axis.

La partie centrale (14, 15) s'étend vers l'avant depuis la base, par exemple s'étend depuis l'ouverture de la base.The central portion (14, 15) extends forwardly from the base, for example extends from the opening of the base.

En fonctionnement, l'utilisateur attache le diffuseur à l'embout de sortie d'air du sèche-cheveux et vient appliquer le diffuseur vers le cuir chevelu par mouvement de rotation, les extrémités distales des doigts étant presque en contact avec le cuir chevelu pour sécher le plus rapidement et le plus uniformément les cheveux humides.In operation, the user attaches the diffuser to the air outlet nozzle of the hair dryer and comes to apply the diffuser to the scalp by rotational movement, the distal ends of the fingers being almost in contact with the scalp for dry the most quickly and most evenly wet hair.

Des essais comparatifs à caméra thermique ont été menés sur un sèche-cheveux muni d'une part du diffuseur selon l'invention et d'autre part muni d'un diffuseur différent en ce que la partie centrale présente un dôme en sens inversé. Il est manifeste que la base et les deux cercles de doigts du diffuseur selon l'invention sont plus chauds au bout de 20 minutes (stabilisation de la température) de chauffe à 60°C (température mesurée sur grill UL à 5cm) prouvant ainsi une répartition de l'air chaud bien plus uniforme.Comparative tests with a thermal camera have been carried out on a hairdryer provided on the one hand with the diffuser according to the invention and on the other with a different diffuser in that the central part has a dome in the opposite direction. It is clear that the base and the two fingers circles of the diffuser according to the invention are hotter after 20 minutes (stabilization of the temperature) of heating at 60 ° C (temperature measured on UL grill at 5cm) thus proving a distribution of hot air much more uniform.

Claims (17)

  1. Diffuser for a hair dryer comprising a base (1) having a rear opening (2) intended to receive the input of an air flow and a front side intended to diffuse an outflow of air, the diffuser comprising fingers (6) that extend forwards from the front side of the base (1), so as to come into contact with hair to be dried, characterised in that the diffuser is in one piece and in that it comprises a central portion (14, 15) which extends forwards from the base (1) and which has a cross-section that decreases or remains constant as it extends forwards from the base, the central portion (14, 15) comprising openings through which part of the air flow can pass to the centre of the diffuser.
  2. Diffuser according to the previous claim wherein the central portion (14, 15) has a substantially convex geometric shape, the convexity of which is oriented forwards.
  3. Diffuser according to one of the previous claims, characterised in that the base (1) comprises a substantially cylindrical opening (2) at the level of the central area thereof at which a fastening means (4) is arranged in order to engage with a hair dryer.
  4. Diffuser according to one of the previous claims, characterised in that the central portion (14, 15) is included in a portion of a cone, the apex of which is positioned towards the front of the diffuser and the axis of which is the central axis of the substantially cylindrical opening (2) at the level of the central area of the base (1) thereof.
  5. Diffuser according to one of the previous claims, characterised in that the central portion (14, 15) comprises openings made between at least one ring (14) and various pillars, said ring comprising a surface that is inclined such that it forms a guide ramp capable of laterally guiding an air flow.
  6. Diffuser according to one of the previous claims, characterised in that the central portion (14, 15) comprises a dome-shaped cap (15).
  7. Diffuser according to the previous claim, characterised in that the cap (15) forms a dome that is substantially semi-spherical at the apex thereof.
  8. Diffuser according to claim 5 in combination with either claim 6 or claim 7, characterised in that the central portion comprises pillars (11) that extend from the base (1) to the apex thereof, so as to hold at least one ring (14) and the cap (15).
  9. Diffuser according to the previous claim, characterised in that it comprises at least one finger (6) having at least two openings (8) through which an air flow can pass.
  10. Diffuser according to either claim 7 or claim 8, characterised in that it comprises a plurality of fingers (6) distributed over a first circle.
  11. Diffuser according to the previous claim, characterised in that it comprises a plurality of fingers (6) distributed over a second circle that is concentric to the first circle.
  12. Diffuser according to the previous claim, characterised in that the fingers (6) of the two circles are positioned in a staggered manner.
  13. Diffuser according to one of claims 9 to 12, characterised in that the inner volume of the fingers (6) is empty and forms hollow portions (5) of the rear surface of the base (1).
  14. Diffuser according to one of the previous claims, characterised in that the base (1) has a concave shape, the concavity of which is oriented forwards.
  15. Diffuser according to the previous claim, characterised in that the base (1) has a shape that is substantially conical or parabolic.
  16. Hair dryer characterised in that it comprises at least one diffuser according to one of the previous claims.
  17. Method for manufacturing a diffuser for a hair dryer according to one of claims 1 to 15, characterised in that it comprises a single moulding step.
EP12795559.9A 2011-11-22 2012-11-16 Integral diffuser for a hair-dryer Active EP2782471B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1160639A FR2982749B1 (en) 2011-11-22 2011-11-22 MONOBLOC DIFFUSER FOR HAIRDRYER
PCT/FR2012/052640 WO2013076407A1 (en) 2011-11-22 2012-11-16 One-piece diffuser for a hair dryer

Publications (2)

Publication Number Publication Date
EP2782471A1 EP2782471A1 (en) 2014-10-01
EP2782471B1 true EP2782471B1 (en) 2018-02-28

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EP12795559.9A Active EP2782471B1 (en) 2011-11-22 2012-11-16 Integral diffuser for a hair-dryer

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EP (1) EP2782471B1 (en)
CN (1) CN103945730B (en)
ES (1) ES2664515T3 (en)
FR (1) FR2982749B1 (en)
WO (1) WO2013076407A1 (en)

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WO2019218042A1 (en) * 2018-05-18 2019-11-21 Silva Denivaldo Goncalves Da Hair-dryer air diffuser
WO2022129847A1 (en) * 2020-12-17 2022-06-23 Dyson Technology Limited Diffuser

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USD1021238S1 (en) 2022-06-02 2024-04-02 Sharkninja Operating Llc Hair care appliance

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ES2212608T3 (en) * 1998-07-30 2004-07-16 Koninklijke Philips Electronics N.V. DRYER / HAIR MOLDER.
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EP1549170A4 (en) 2002-05-29 2008-07-09 Conair An ion generating device
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CN201758987U (en) * 2010-07-02 2011-03-16 邱晓忠 Suction type air diffuser capable of regulating air volume for blower

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Publication number Priority date Publication date Assignee Title
WO2019218042A1 (en) * 2018-05-18 2019-11-21 Silva Denivaldo Goncalves Da Hair-dryer air diffuser
WO2022129847A1 (en) * 2020-12-17 2022-06-23 Dyson Technology Limited Diffuser

Also Published As

Publication number Publication date
EP2782471A1 (en) 2014-10-01
ES2664515T3 (en) 2018-04-19
WO2013076407A1 (en) 2013-05-30
FR2982749A1 (en) 2013-05-24
FR2982749B1 (en) 2014-05-16
CN103945730B (en) 2017-08-01
CN103945730A (en) 2014-07-23

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